Car Hack - How to test your Mass Air Flow sensor without tools

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  • เผยแพร่เมื่อ 16 ต.ค. 2024

ความคิดเห็น • 349

  • @DocMackGarage
    @DocMackGarage  ปีที่แล้ว +21

    Hey Peeps, checkout the full video here th-cam.com/video/qEkysTuDT3Q/w-d-xo.html , like and Subscribe 😊

    • @anugrahcahya5964
      @anugrahcahya5964 ปีที่แล้ว

      Hi, my Chevrolet cruze is running bad idle and bad gas miliage, could it be MAF sensor or bad injector? Because when i unplug the Maf sensor the engine is not turning off and still same ritym of bad idle

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      @anugrahcahya5964 it could likely be a MAF sensor however check your ignition coils and spark plugs. What year and how many miles ?

    • @kyeibaffourseth6683
      @kyeibaffourseth6683 17 วันที่ผ่านมา

      Need full video

    • @DocMackGarage
      @DocMackGarage  17 วันที่ผ่านมา

      @@kyeibaffourseth6683 Full video linked above 😃

  • @makotohigashi9311
    @makotohigashi9311 ปีที่แล้ว +184

    That a good maf air flow sensor. bad one would keep running cause the sensor don't know that you unplug it.

    • @rylford
      @rylford 7 หลายเดือนก่อน +39

      That's what he said😂

    • @slowazzes1972
      @slowazzes1972 6 หลายเดือนก่อน +12

      Not really, could still work but be out of range causing lean/Rich conditions

    • @CalebNavst-db6qi
      @CalebNavst-db6qi 6 หลายเดือนก่อน

      Lol

    • @kwadrillz5350
      @kwadrillz5350 6 หลายเดือนก่อน +1

      Is this the same with a map sensor?

    • @devilmecare
      @devilmecare 3 หลายเดือนก่อน +5

      My car wouldn't start so I unplugged mine. Drove for years without plugging it back in.

  • @zizmares
    @zizmares 2 หลายเดือนก่อน +14

    I've been chasing poor fuel economy on my bmw for a while. I even did a intake manifold cleaning myself, it was gunked up bad, made no difference. I forgot to plug my maf back in when going for a test drive. Lo and behold nothing changed with it unplugged, no CEL either. Turns out I've been driving with a broken maf sensor for months

    • @DocMackGarage
      @DocMackGarage  2 หลายเดือนก่อน +1

      @zizmares Glad it helped. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @Davidson-007
    @Davidson-007 หลายเดือนก่อน +3

    Not always the case especially with older cars. Still runs when unplugged doesn’t mean it’s faulty. Could be a vacuum leak somewhere & you think it’s a bad maf

    • @collinsofoegbu3699
      @collinsofoegbu3699 หลายเดือนก่อน

      how can someone detect a vacuum licks

    • @cheezedoodle8356
      @cheezedoodle8356 7 วันที่ผ่านมา

      @@collinsofoegbu3699 Light an incense or something and put it next to the intake tubes while the car is running. If you see the smoke clearly getting sucked into a certain area besides the front entry then there is a leak.

  • @JohnnyHouston-xb9rj
    @JohnnyHouston-xb9rj 3 หลายเดือนก่อน +16

    This worked... My car kept running so now I know the issue.. Thanks

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน +1

      @JohnnyHouston-xb9rj You are welcome. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @jeangrey3045
    @jeangrey3045 7 หลายเดือนก่อน +6

    Does it apply to a 2015 Silverado ? I unplugged it and it stayed on

    • @DocMackGarage
      @DocMackGarage  7 หลายเดือนก่อน

      Hi, you will have two banks and a MAP sensor so it might not apply

    • @pattonmaning8781
      @pattonmaning8781 23 วันที่ผ่านมา

      Yeah .ur maf...is bad..I got the same truck...I bought a new maf..no problems now..going on a year now

    • @godackgudalach1
      @godackgudalach1 16 วันที่ผ่านมา

      I got a 2017 and it surges at start up .. did a MAF fix your issue?

  • @ezracazier5213
    @ezracazier5213 4 หลายเดือนก่อน +6

    It doesnt necessarily mean its good. Unplugging it and seeing if it runs better is just a good way to be sure if it is bad or not working properly because when unplugged the ecu will run the engine base on defult values. On some vehicles, it just wont run.. just because it still runs while unplugged doesn't always mean that its a bad maf sensor

    • @kwasiOwusu2
      @kwasiOwusu2 4 วันที่ผ่านมา

      So how can you detect a bad maf sensor?

  • @alinoory6469
    @alinoory6469 8 หลายเดือนก่อน +9

    Sorry sir i take that back , it was something else❤

  • @nethmisupulsara2924
    @nethmisupulsara2924 10 หลายเดือนก่อน +4

    Hi, thank you for your video, I have done that but my engine was still running so definitely it means I need to change my air flow sensor?

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน

      Hi, You are most welcome. Please consider subscribing to my TH-cam Channel for free if you haven't already. The first thing I would like to know is what made you try this, there mist be something the car is doing . That might help me give you better advice.

    • @aaronlarsen8412
      @aaronlarsen8412 10 หลายเดือนก่อน +4

      ​@TheDocMackCarChannel what kind of a bot response is that. Why are you asking what made him try that when he litterally just did that becuase it's obviously what the video Is about. And you didn't even answer the question

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน +2

      @aaronlarsen8412 I don't want to give a shot in the dark answers , if it is a dual intake it could be different and the car could still run. What if it had been a mis fire on one cylinder, then the issue could be completely different. I like to gather facts before providing a helpful answer. Hope this helps answer your question 😃

    • @bam9138
      @bam9138 9 หลายเดือนก่อน

      @@DocMackGarage I just bought a brand new mass airflow sensor when I unplugged it with the engine running it did not shut off. My Lincoln did make a different sound after unplugging it…. Do you think it’s because it takes the second for it to be programmed into my car?

    • @DocMackGarage
      @DocMackGarage  9 หลายเดือนก่อน +1

      @bam9138 Hi , I would like to give good advice. I will.need to know what the issue is with the vehicle first. What make , model year and miles. What engine type .

  • @fixtricks8626
    @fixtricks8626 ปีที่แล้ว +8

    I unpluged mine it still ran but dide shortly after ? Woukd it be air sensor ?

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว +2

      It could be , but before forking out money , do an OBD scan and it will show MAF related codes if it is the issue. Auto parts store can do this for you for like $15 . Make sure to subscribe to my TH-cam Channel 😃

  • @ashleyduncan1137
    @ashleyduncan1137 6 ชั่วโมงที่ผ่านมา

    I have a 2012 Lincoln MKZ and I started my car and unplugged it my car still running do that apply to my car too

    • @DocMackGarage
      @DocMackGarage  5 ชั่วโมงที่ผ่านมา +1

      @ashleyduncan1137 Your car will have a MAP sensor, so the engine will still run ? What symptoms and codes ? Please Subscribe for free to show your support

    • @ashleyduncan1137
      @ashleyduncan1137 5 ชั่วโมงที่ผ่านมา

      @@DocMackGarage p1290 and p1299

  • @informatehoy
    @informatehoy 10 หลายเดือนก่อน +5

    I have a sienna 2007 check engine and VSC lights on. Mechanic hasn't found the issue. Sometimes when i am driving, the car starts shaking and turs off

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน +1

      Hi, I have a video on this issue. Please remember to Subscribe th-cam.com/video/oASbWC2loh4/w-d-xo.html

    • @tomaspakutinskas4709
      @tomaspakutinskas4709 7 หลายเดือนก่อน

      Vsc light is for faulty MAF.you can try it to clean it or replace it

    • @SummerEaze
      @SummerEaze 7 หลายเดือนก่อน +1

      Maybe check ignition coil & spark plugs usually need those replaced either every 30k-70k miles

    • @informatehoy
      @informatehoy 7 หลายเดือนก่อน +2

      @@SummerEaze Thanks. I already fixed the issue. That was 2 things but worse was the fuel pump. Mechanics said it couldn't be fuel pump because of millage of van, 130 k. I told one of them that even a new fuel pump can be defective. I had to fix it myself. Second issue was oxygen sensor.

    • @brassassmonkey
      @brassassmonkey 6 หลายเดือนก่อน

      Dude that's dangerous

  • @alinoory6469
    @alinoory6469 8 หลายเดือนก่อน +3

    Does this have anything to do with bad gear shifting , in automatic transmission sir.

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน +1

      Hi , short answer no, long answer probably. If you are referring to a loss of power, then MAF will affect the way the transmission feels. Bad gear shifting could be caused by throttle adaptation, or an actual issue like a gearbox solenoid.

    • @marioygarciagarcia6265
      @marioygarciagarcia6265 7 หลายเดือนก่อน

      On some cars yeah like old Ford focus 😊

  • @luiszuniga974
    @luiszuniga974 7 หลายเดือนก่อน +2

    I stall when i stopped in lights or stop signs i did this test in a 2007 mustang gt and it kept running but when i plug it back in it turn off should i change it ?

    • @belajar_bangunan
      @belajar_bangunan 6 หลายเดือนก่อน +2

      Yes, you get change this sencor. Same as my problems with my car, now all good after change MAF sencor

  • @blurvital
    @blurvital 6 หลายเดือนก่อน +5

    I changed mine to a cheap eBay one and definitely doesn’t work 😂😂 I’m waiting on the Bosch maf to arrive

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน +4

      Haha yup, buy genuine buy once , buy cheap buy twice. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

    • @blurvital
      @blurvital 6 หลายเดือนก่อน +1

      @@DocMackGarage 4 sure earned a new sub

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      @@blurvital Thank you 😊

  • @ProGamingProphecy
    @ProGamingProphecy 3 หลายเดือนก่อน +4

    Could a vacuum leak cause a MAF Sensor to continue running?

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน

      @ProGamingProphecy It could but maybe your car is equipped with a MAP sensor. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support

  • @philipbutcher9753
    @philipbutcher9753 ปีที่แล้ว +12

    Just put in a brand new mapping sensor, same check engine light,same error code p0106, same problem, and when I go to unplug it, it still runs.

    • @UIC-Fitness92
      @UIC-Fitness92 ปีที่แล้ว

      Any update l? Having same issue

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว +2

      What kind of vehicle do you both have ? Same codes before and after ?

    • @kevinreid1697
      @kevinreid1697 4 หลายเดือนก่อน

      Sounds like wiring or connection issue. Check if you are getting power to the sensor.

    • @johnathancollard53
      @johnathancollard53 3 หลายเดือนก่อน

      Im told Some vehicles have a programming sequence

  • @stupidsedan
    @stupidsedan 5 หลายเดือนก่อน +1

    Is this safe for the ecu, engine?

    • @DocMackGarage
      @DocMackGarage  5 หลายเดือนก่อน

      It is but it is a test and identify the issue , not as a bandaid . Newer cars may jump into limp mode but after some time it will come back to normal , or you can disconnect and reconnect the battery. There is no damage that can be done testing MAF this way. If you are concerned run a scan tool . Please consider subscribing to my TH-cam Channel for free if you haven't already.

  • @leo3325
    @leo3325 10 หลายเดือนก่อน +1

    I have p0171 lean code. I unplug MAF sensor, Car still running. Live data of MAF shows 0.3g/s at idle (rough), hard to reach 2g/s at 3000rpm. Is it a bad MAF sensor? Have tried to clean it.

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน +1

      It could be , but I would suggest checking for vacuum leaks and also O2 sensor

    • @luiscovarrubias9153
      @luiscovarrubias9153 7 หลายเดือนก่อน

      @@DocMackGarageI need your suggestion, I have a p0171 but the dad seems to run alright, I changed the o2 sensor upstream, changed the mass air flow and cleaned it but when I disconnect it while my dad was pressing the gas pedal it still ran. What should I do

    • @DocMackGarage
      @DocMackGarage  7 หลายเดือนก่อน

      @luiscovarrubias9153 Hi ,try checking the PCV valve . Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @Mogonly
    @Mogonly 9 หลายเดือนก่อน

    My car turned off, but scanner showing maf sensor code, what does this mean?

    • @DocMackGarage
      @DocMackGarage  9 หลายเดือนก่อน

      What code do you get ? What make model and Engine ?

  • @NRB_75
    @NRB_75 9 หลายเดือนก่อน +1

    Does this have anything to do with 2010 Traverse saying Service Stabiltrak Traction Control and having engine speed reduce? Also when stopped engine will vibrate hard at times????

    • @repone817
      @repone817 9 หลายเดือนก่อน

      What did you find out? I’m having that problem now

    • @NRB_75
      @NRB_75 9 หลายเดือนก่อน +1

      @repone817 actually no
      I have not been able to get a definitive answer. Which is ok cause I have no clue
      I have watched so many videos and it seems like all say things different.
      I am still researching but lets keep in touch

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน

      Hey mate. Take a look at this. th-cam.com/video/oASbWC2loh4/w-d-xo.html

  • @aleksandarnikolovski8865
    @aleksandarnikolovski8865 3 หลายเดือนก่อน

    Hy, i have golf mark 4 1.9 81kw.
    The car dasn,t pool enough. I tried unpluging maf sensor, and the car is still running, is this work for this car to?
    Thanks in advans

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน

      Hi, what model of engine ? Did you mean like spool ?

    • @aleksandarnikolovski8865
      @aleksandarnikolovski8865 3 หลายเดือนก่อน

      @@DocMackGarage i mean dont have power. Sory for my english

  • @VidiSLTU
    @VidiSLTU 6 หลายเดือนก่อน

    My engine stop working when i put back MAF..
    What it means ?

    • @DocMackGarage
      @DocMackGarage  5 หลายเดือนก่อน

      Hi , how do you mean it stopped running?

    • @VidiSLTU
      @VidiSLTU 4 หลายเดือนก่อน

      ​@@DocMackGarage Engine cut off..

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      @VidiSLTU This should mean an MAF issue but run an OBD 2 check first.

  • @Lonestreets
    @Lonestreets 4 หลายเดือนก่อน +1

    I have a 2016 Acura mdx with two codes P0171 and P0174 i cleared the codes a few times and they keep coming back after a few minutes of driving i am assuming it’s the MAF sensor i came across your video tried it and my engine sounded as if it was about stall but it kept running.

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      Check for vacuum leaks or pcv. It could be the maf , so start the test with MAF and check MAP if your car has one. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support

    • @Lonestreets
      @Lonestreets 4 หลายเดือนก่อน

      @@DocMackGarage So i bought a new MAF sensor and the problem is still there so definitely not the MAF sensor. Sometimes when i start the car its not there then a next time its there.

    • @Lonestreets
      @Lonestreets 4 หลายเดือนก่อน +1

      I have subscribed.

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      @Badsteppa Thanks for Subscribing, it could be a vacuum leak, also did you check the cap ?

    • @Lonestreets
      @Lonestreets 4 หลายเดือนก่อน

      @@DocMackGarage No I didn’t check the cap cause it seems fine but i will do a deep inspection of it.

  • @ardoario4990
    @ardoario4990 ปีที่แล้ว

    Does this test apply to all vehicle years, makes and models? Thank you!

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      It should on inline engines, but on V configuration Engines , this might be a bit different.

    • @ardoario4990
      @ardoario4990 ปีที่แล้ว +1

      @@DocMackGarage Great, thank you.

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      @ardoario4990 You are most welcome, please consider subscribing to my TH-cam Channel for free if you haven't already .

  • @geo6616
    @geo6616 11 หลายเดือนก่อน

    same i tried that at my mazda mx-5 2005 after i got p2187 bank 1 code i let the engine run and then i unplug the sensor, the engine was still running and it would start choking. do you suggest change maf sensor? already replaced c02 upstream sensor (high revving)

    • @DocMackGarage
      @DocMackGarage  11 หลายเดือนก่อน

      Is this am inline engine ? How many Cylinders?

    • @geo6616
      @geo6616 11 หลายเดือนก่อน

      @@DocMackGarage 1.8l inline 4 cylinder 5spd manual

  • @ThegrajRangasamyMoodley
    @ThegrajRangasamyMoodley 12 ชั่วโมงที่ผ่านมา +1

    Thanks 👍

    • @DocMackGarage
      @DocMackGarage  11 ชั่วโมงที่ผ่านมา +1

      @ThegrajRangasamyMoodley You are welcome, please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

    • @ThegrajRangasamyMoodley
      @ThegrajRangasamyMoodley 11 ชั่วโมงที่ผ่านมา

      @@DocMackGarage please show mark1golf

  • @MuddyCupzz
    @MuddyCupzz 10 หลายเดือนก่อน

    My car has trouble turning over sometimes. But if i give it a little gas it starts up. Sometimes it revs itself up to 3k rpm. I checked my fuel pump relay and was thinking it could be a MAF sensor. Wondering what your opinion is, hoping i dont have to replace the fuel pump.

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน

      Hello, if you are mechnnically inclined, check the full preassure to the rail first , if low to no pressure the issue lies outside of the engine such as pump or filter. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

    • @Switchblxde7
      @Switchblxde7 8 หลายเดือนก่อน

      My boy, you have a carbureted engine system, of course its gonna take time to prime the engine. And when it revs itself up to 3k rpm, that means it’s idling and trying to warm itself up, so let it warm up.

    • @MuddyCupzz
      @MuddyCupzz 8 หลายเดือนก่อน

      @@Switchblxde7 crazy because it ended up being a fuel pump my boy

    • @Switchblxde7
      @Switchblxde7 8 หลายเดือนก่อน

      @@MuddyCupzz Glad i could help 👍

    • @MuddyCupzz
      @MuddyCupzz 8 หลายเดือนก่อน

      @@Switchblxde7 me too

  • @anix1398
    @anix1398 10 หลายเดือนก่อน +1

    Hello. I have u0073 and p0150 eror. But i dont have o2 senzor. Could be a bad maf

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน +1

      Hello, especially with the U code I would check wiring first , fuses and relays .

  • @rigelstare3172
    @rigelstare3172 8 หลายเดือนก่อน

    If we remove it from range rover sport 2008 2.7 v6,the engine will turn off?

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน

      Yours has two banks so possibly might not turn off depending on the air intake. .

  • @doobyloco7048
    @doobyloco7048 8 หลายเดือนก่อน +5

    Does this work on bmw 328i?

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน +2

      It should , but remember BMW maf sensors are very sensitive, I would rather you plug in a scan tool than do this as BMWs are very touchy . I own an E60 and a small unplug like that can make the car feel different. Please consider subscribing to my TH-cam Channel for free if you haven't already

  • @jamshaid20091
    @jamshaid20091 ปีที่แล้ว +2

    Hey, thank you for the video, I have done that but my engine was still running ? So definitely it means I need to change that

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      You are most welcome, I would say to just use it as a guide first . What model and year of vehicle? Next step would be to get the car scanned . Autoparts stores do this for a small cost . See what codes get returned . You also need to see the symptoms and if you have check engine on .

    • @jamshaid20091
      @jamshaid20091 ปีที่แล้ว

      @@DocMackGarage its E250 ( 2012) there isn’t any code on dashboard, but seems like the car is on limp mode..

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      @jamshaid20091 It could be MAF but modern ECUs have a way of limiting the RPM to prevent damage , so the issue could be bigger or minor. I would highly suggest a full scan be done on the car to see what codes return . This isn't a car you want to throw parts at - its too lovely but complex . Let me know how you go. Also please consider subscribing to my TH-cam Channel for free if you haven't already.

    • @jamshaid20091
      @jamshaid20091 ปีที่แล้ว +1

      @@DocMackGarage okay thank you so much

    • @Smith93646
      @Smith93646 7 หลายเดือนก่อน

      ​@@DocMackGarage some people say that if you have map sensor and you unplug MAF it'll still run.. I have a 08 Chevy Express 6.0 and mine still runs after I do that but my fuel trims get worse with more RPM.. I Have CODES P0300 P0171 P0174???? ANY ADVICE

  • @702SLICKVICK
    @702SLICKVICK หลายเดือนก่อน

    I have a 2008 Malibu 2.4 and I disconnected the maf sensor and it was still on maybe I need a new sensor?

    • @DocMackGarage
      @DocMackGarage  หลายเดือนก่อน

      @702SLICKVICK You might have a MAP sensor aswell so possibly try scanning for codes first.

  • @TheMessiMindset
    @TheMessiMindset 4 หลายเดือนก่อน

    I bought a new maf sensor and tried this but my car was still running what’s the problem??

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      I would say the first thing you have to do is scan the car for codes , what is the issue to start off with ?

    • @TheMessiMindset
      @TheMessiMindset 4 หลายเดือนก่อน

      @@DocMackGarage P0102 I got this code like on a car on position but not the start and when I start the car like the engine light turned off what would be the problem my car is not giving like hundred percent of the power during acceleration, i clean the throttle body everything but still bad acceleration what could be the problem? Can you tell me?

  • @shawnbrown6714
    @shawnbrown6714 8 หลายเดือนก่อน

    Changed mine on 2019 gmc terrain but engine still running do I need to spray it

    • @DocMackGarage
      @DocMackGarage  7 หลายเดือนก่อน

      With newer vehicles I would suggest plugging in a scan tool before doing anything as there could be alot of variables

  • @forhisglory700
    @forhisglory700 11 หลายเดือนก่อน +1

    Thanks for the video. My vehicle responded the same as what's on this video, HOWEVER when I attempted to start the vehicle with the maf circuit disconnected the engine immediately shut off. My "check engine" light remains on. Still trouble shooting WHY.
    I think it's connected to my "heater core" because my vehicle is blowing cool air when it should be hot.
    I'm gonna attempt a heater core flush to if that resolves the problem.
    SUGGESTIONS APPRECIATED.

    • @DocMackGarage
      @DocMackGarage  11 หลายเดือนก่อน +1

      You are most welcome, Worth a try, what year make and model? Mileage?

    • @forhisglory700
      @forhisglory700 11 หลายเดือนก่อน +1

      @@DocMackGarage
      2006 Toyota Corolla standard vehicle.
      In terms of mileage 2006 models for Corolla's stay at 299999 km. The vehicle has been at that gauge for years.

    • @forhisglory700
      @forhisglory700 11 หลายเดือนก่อน

      @@DocMackGarage
      Cleaned Mass Air Flow sensor yesterday, it helped improved heat in cabin, HOWEVER check engine light still on. Thinking of checking engine filter.
      Attempted heater core flush, BUT unable to remove heater core hose. The car is 17 years old, so that might explain it.

    • @DocMackGarage
      @DocMackGarage  9 หลายเดือนก่อน

      @forhisglory700 It might be worth scanning the car for fault codes to see what you get . That will help pinpoint the issue. Also please Subscribe to my TH-cam Channel for free if you haven't already.

  • @cruz1118
    @cruz1118 2 หลายเดือนก่อน

    Does this work also on a ford diesel truck?

    • @DocMackGarage
      @DocMackGarage  2 หลายเดือนก่อน

      @cruz1118 It should. Worth checking your MAP. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @mikhailskorokhodov5411
    @mikhailskorokhodov5411 8 หลายเดือนก่อน

    I have a 2022 Chevy Trailblazer 1.3L AWD. I got a code for MAF sensor. The code is P0101 and P1101. What do I need to do to fix it?

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน

      What kind of mileage has the vehicle done ?

    • @mikhailskorokhodov5411
      @mikhailskorokhodov5411 8 หลายเดือนก่อน

      @@DocMackGarage it’s been hit on the front end and everything was replaced OEM parts

    • @mikhailskorokhodov5411
      @mikhailskorokhodov5411 8 หลายเดือนก่อน

      @@DocMackGarageany ideas?

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน +1

      @@mikhailskorokhodov5411 Most likely a MAF or the plug itself .

    • @mikhailskorokhodov5411
      @mikhailskorokhodov5411 8 หลายเดือนก่อน

      @@DocMackGarage I just checked under the hood. Looks like the hose was unplugged and it was getting too much air haha. I drove it a little and it went on limp mode again but then I turned it off and on and it seems to drive fine and better than before now. Should I be good?

  • @احمدنديمكاظمضهد
    @احمدنديمكاظمضهد ปีที่แล้ว

    I have elantra 2008 and i unplugged maf sensor and it still running
    What that mean?

    • @dabsfordayz2150
      @dabsfordayz2150 11 หลายเดือนก่อน

      That u need to get a new sensor

  • @krtolebiohazardcs1.681
    @krtolebiohazardcs1.681 8 หลายเดือนก่อน

    My car have no power,but when I disconnect MAF sensor power is back. Is that telling me I have bad MAF ?

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน

      Power as in no dome lights etc ot lack of power?

    • @krtolebiohazardcs1.681
      @krtolebiohazardcs1.681 8 หลายเดือนก่อน

      @@DocMackGarage lack of power. Feeling like don't have turbo charger ....

  • @longjohnsilver8560
    @longjohnsilver8560 หลายเดือนก่อน

    Doesn't do this with all cars? Because I did this with mine for the heck of it and it didn't shut off. but I don't have a check light

    • @DocMackGarage
      @DocMackGarage  หลายเดือนก่อน

      @@longjohnsilver8560 if your car is equipped with a MAP or dual MAF then it won't do it.

  • @marianajaldin2757
    @marianajaldin2757 ปีที่แล้ว +1

    My MAF sensor it is reading. And the car goes off when unplugged the sensor is. Anyway... It is reading funny air intake temp. Like 89 Celsius at a cold morning start. Is that ok or normal???

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      It seems a little high for a cold start, where is your air intake located ? Running an aftermarket intake pod ?

    • @marianajaldin2757
      @marianajaldin2757 ปีที่แล้ว

      @@DocMackGarage mine is a Honda CR-V K24z. Intake manifold is on the front, exhaust on the back. Nothing aftermarket. Everything started after a head gasket job. Now I'm thinking maybe I, unintentionally, broke some wiring, somewhere, when I was making room for displacement of stuff, on removing the head. Those cables look dry and rigid. Maybe I did hit something. I do have p0355 and p0103 codes. No vacuum leak so far.

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      @marianajaldin2757 One sounds like an ignition coil,and the other probably a wiring issue for MAF

    • @marianajaldin2757
      @marianajaldin2757 ปีที่แล้ว

      @@DocMackGarage I did today the manual service procedure recommended. Check for continuity, and a jumper between the two main wires. Conclusion: replace the sensor. Maf reading was apparently ok. I mean... Working. Reading changes in the flow. But IAT was kinda crazy. Start up on 60 Celsius and increasing by the minute, with the engine off. Just the "on" position on the key. In about 15 min it was reaching 89 Celsius.

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      @marianajaldin2757 try unplugging the maf, then the next morning plug it in when the engine is cold and start it. See if it has the same issue.

  • @КактыТам-ш7ф
    @КактыТам-ш7ф หลายเดือนก่อน

    I have totally new original maf sensor. And unplugged it works sam as an connected

    • @DocMackGarage
      @DocMackGarage  หลายเดือนก่อน

      What kind of car and year ?

    • @КактыТам-ш7ф
      @КактыТам-ш7ф หลายเดือนก่อน

      @@DocMackGarage 2005 audi a4 s4 b7 2.0tdi

    • @DocMackGarage
      @DocMackGarage  หลายเดือนก่อน

      @user-mo3iz4nz4v I would say you might have a MAP , so that is why it is running on base map. Please consider subscribing to my TH-cam Channel for free if you haven't already.

  • @kevinkimcastor439
    @kevinkimcastor439 ปีที่แล้ว

    I tried it on my infiniti fx35 V6 2007 when I unplug the socket from MAF sensor but the engine doesn’t shut off but the engine is like running rough and the rpm goes up and down. Do you it’s MAP sensor? Thanks!

  • @TalyoOroc
    @TalyoOroc 2 หลายเดือนก่อน

    The same at any kind of car?

    • @DocMackGarage
      @DocMackGarage  2 หลายเดือนก่อน

      @@TalyoOroc Depends on the car, some cars have MAP

  • @El_LeChErO91
    @El_LeChErO91 4 หลายเดือนก่อน

    Let me get this right.
    1.) unplug maf sensor, car shuts off means good maf sensor.
    2.) unplug maf sensor, car keeps running means bad maf sensor.
    Now my question is, wouldn’t the car not start even if the maf sensor was plugged in to a faulty maf sensor. Because the maf sensor is already busted so unplugging or leaving it plugged in makes no difference.

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      The car can still start with a bad MAF but it will run rough. If the vehicle has a MAP then it will still run. Some cars have just MAF and some MAF and MAP.

    • @El_LeChErO91
      @El_LeChErO91 4 หลายเดือนก่อน

      @@DocMackGarage ahh ok makes sense, thanks for clearing that up. So if it has a MAP, that should also be checked out right?

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      @El_LeChErO91 You are welcome, that is correct check both, best thing is to start off with MAF first then get a code reader to see what codes you get. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support .

    • @almministrys1659
      @almministrys1659 วันที่ผ่านมา

      ​@@DocMackGaragewhat's map

  • @TattoosByWill
    @TattoosByWill 7 หลายเดือนก่อน

    Does it work with ford focus SE ?

    • @DocMackGarage
      @DocMackGarage  7 หลายเดือนก่อน

      If you have a MAP behind maybe not , ig just a single intake with MAF yes. What issues do you have to start off with ?

    • @TattoosByWill
      @TattoosByWill 7 หลายเดือนก่อน

      I have a p2111 and p2112 code and the car doesn’t work properly I already check it and the TBI needs to be changed

  • @brendantulia1182
    @brendantulia1182 3 หลายเดือนก่อน

    Sir what dies code P0202 means ??
    My vehicle is Jeep commander 4.7L v8.
    Petrol

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน

      It would be fuel injector number 2. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @supladitahiyahful
    @supladitahiyahful 6 หลายเดือนก่อน

    is this works to mazda tribute 2006 model? when i unplug the connector to maf sensor its still running so meaning my maf sensor is quit faulty?

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      Hi, the first thing is what symptoms are you having ?

    • @supladitahiyahful
      @supladitahiyahful 6 หลายเดือนก่อน

      my car engine is running when in nuetral once i set to drive and its start to suddenly shutdown the engine whiel turning left or right need help what is the possible issue on my car. Thank you
      newly change battery
      newly change 4pcs sparkplug

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      @@supladitahiyahful Check for vacuum leaks , and also make sure the coils are plugged in properly. Run a scan to see what codes you get. Sounds like low idle.

  • @victordaza2949
    @victordaza2949 4 หลายเดือนก่อน +1

    Does this work on 2000 Nissan Maxima ??

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      That will be a V6 , most likely but if you have a MAP sensor then it might still run. If yours has OBD 2 run a scan. Please consider subscribing to my TH-cam Channel for free if you haven't already.

  • @travisanderson5234
    @travisanderson5234 4 หลายเดือนก่อน +1

    I have an 03 Corolla 1.8L; that is spiking rpm’s and down shifting or not shifting like it used to?
    I Did have PO301 codes; but just fixed fixed with new plugs and coil packs. Did I do something wrong?

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      Hi, did you check for vacuum leaks ? Did you nudge the CCV hose when replacing tye said components? What codes do you get now ? Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

    • @travisanderson5234
      @travisanderson5234 4 หลายเดือนก่อน

      @@DocMackGarage it’s not reading a code. Just the issues.
      I’m not sure about the ccv; I don’t know a whole lot about vehicles. I will check and hit you up. 🙏

  • @maliahj09
    @maliahj09 หลายเดือนก่อน

    Does this work for a 2015 honda fit

    • @DocMackGarage
      @DocMackGarage  หลายเดือนก่อน

      @maliahj09 if it is a 2015 yo 2020 model you might have a MAP sensor too. The first thing is what symptoms are you having ?

  • @JoseSanchez-fe8bz
    @JoseSanchez-fe8bz 57 นาทีที่ผ่านมา

    I bought a new one and after disconnecting the car it keep running , does anyone know why?

  • @prabeshthapa736
    @prabeshthapa736 9 หลายเดือนก่อน

    Does that engine light goes cause I did it just came up in my dashboard 😱😢

    • @DocMackGarage
      @DocMackGarage  9 หลายเดือนก่อน

      Hi , I have a video on that. Please check one of my latest videos

  • @battlearenatoshinden
    @battlearenatoshinden ปีที่แล้ว +18

    This test doesn't work with my 370Z. It has two intakes, and two MAF sensors. I have 2 old and 2 new MAF sensors on hand. All 4 stop the engine while in bank 2, and all 4 keep running while in bank 1, when unplugged. Maybe it only works for diagnosing single intake engines.

    • @patrickjp5727
      @patrickjp5727 8 หลายเดือนก่อน

      i did this to my g37 .. I unplugged only one now its idling high

    • @timothymunz929
      @timothymunz929 3 หลายเดือนก่อน

      it doesn't work on my Silverado cus it has a MAF and a MAP lol

  • @willsosa133
    @willsosa133 5 หลายเดือนก่อน

    Does this work for a map sensor the same way?

    • @DocMackGarage
      @DocMackGarage  5 หลายเดือนก่อน

      Hi, It wouldn't as MAP is after the throttle body going back and by the manifold

  • @gurshuanmccarthy4167
    @gurshuanmccarthy4167 2 หลายเดือนก่อน

    My toyota runx 1.6 RS have no power when accelerate. My car vibration when stand at a robot. When the car is cold in the morning it drives ok but when the motor is hot it does all of the above, please help

    • @Cajunisback
      @Cajunisback 2 หลายเดือนก่อน

      Same here ,

    • @DocMackGarage
      @DocMackGarage  2 หลายเดือนก่อน

      Check your transmission fluid

  • @alejandro9644
    @alejandro9644 ปีที่แล้ว

    Why would my Pontiac g8 run perfectly fine until you plugged the maf sensor in and then it would start “choking” revving high and then shutting itself off? I’m Very confused

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว +1

      Whoa that is a very nice car. Same as a Holden Commodore G8. Is this the V8 version? What mileage ?

  • @meganlockhart3639
    @meganlockhart3639 11 หลายเดือนก่อน

    What does it mean to have the car running already then i unplug the map sensor and it stays running but when i plug it back in it dies

    • @DocMackGarage
      @DocMackGarage  11 หลายเดือนก่อน

      Can you please advsie what kind of car is it, and more importantly what prompted you to search for this video. This will give me a better idea

    • @omarzukoflores6637
      @omarzukoflores6637 4 หลายเดือนก่อน

      @@DocMackGarage The same thing happens in my mustang 4.6, I disconnect it and it continues working, I connect it and it turns off and for a long time it has thrown me the code p0420

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน +1

      @omarzukoflores6637 This is because the MAF can't measure how much air needs to be aspired by the engine, and could cause the vechile to run rich , the MAF then shuts the engine off because the readings are off. MAP is manifold side and MAF is before the throttle body

    • @omarzukoflores6637
      @omarzukoflores6637 4 หลายเดือนก่อน +1

      @@DocMackGarage Thank you very much for answering so I have to change the MAF sensor for a new one ???? Thank you very much again

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      @omarzukoflores6637 You are welcome, please consider subscribing to my TH-cam Channel for free if you haven't already. The first thing I would look at is why you unplugged the MAP to start off with , it might not necessarily be a bad MAF just yet. Did the vehicle have rough running issues ?

  • @WonderNkosi-cf4ub
    @WonderNkosi-cf4ub 3 หลายเดือนก่อน

    I have changed the sensor but the problem is that when i plug the sensor my engine start reviving up and down but if I unplugged the sensor the engine keep on idling

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน

      What kind of vehicle is this? Make , model year and mileage please.

    • @thabangmsiza3114
      @thabangmsiza3114 3 หลายเดือนก่อน

      Mine does the same too, 2007 fiat punto active 1.2l

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน

      @@thabangmsiza3114 I would check for Air leaks from the hoses , and also if you have a MAP sensor check that too.

  • @rrrajasab8663
    @rrrajasab8663 3 หลายเดือนก่อน

    What is the name of the second sensor behind?

  • @GodessIsabelRaina
    @GodessIsabelRaina 7 หลายเดือนก่อน +1

    Will this work on a SUV❓️🤔(2018 Chiddƴ Eqinox) 🥴

    • @DocMackGarage
      @DocMackGarage  7 หลายเดือนก่อน +1

      Yours is a Turbo Charged engine ? If you have a MAP or dual intake it might not apply.

    • @GodessIsabelRaina
      @GodessIsabelRaina 7 หลายเดือนก่อน +1

      @TheDocMackCarChannel
      Wow, didn't expect a reply so soon😃 yes it is a turbo. Worst mistake I ever made. Welllll not worst but close to worst😂
      New sub as well😘

    • @DocMackGarage
      @DocMackGarage  7 หลายเดือนก่อน

      @GodessIsabelRaina You are most welcome. It is still a good vehicle 😃. Thank you for Subscribing.

  • @moseschansa5666
    @moseschansa5666 3 หลายเดือนก่อน

    What could be the Problem when the car hunts only in the morning, the idle speed is not constant, however when I remove the battery the vehicle starts properly and ready to move.....

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน +1

      Do you mean after you remove the battery connection and Refit it, it works ?

    • @almministrys1659
      @almministrys1659 วันที่ผ่านมา

      ​@DocMackGarage yes explain

  • @exploRidge
    @exploRidge 6 หลายเดือนก่อน

    What about the map sensor?

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      It could also be, but the video is to check MAF which is before throttle body .

    • @exploRidge
      @exploRidge 6 หลายเดือนก่อน

      @@DocMackGarage I do not have any sensor before the throttle body, but i do have a sensor after it. It's a Nissan terrano 2014 petrol. So now I'm confused what to check

  • @Nickz1290
    @Nickz1290 7 หลายเดือนก่อน +1

    Work on 01 Lexus rx300?

    • @DocMackGarage
      @DocMackGarage  7 หลายเดือนก่อน

      Yours might be a dual intake with a MAP, so probably not.

  • @ioanberki2084
    @ioanberki2084 ปีที่แล้ว

    i have an audi a6 and it cut out on me while driving now it cranks but not starting and i used OBD and it shlow code P0102 its mass ai flow circuit low , now does my car not start cause of that ??? pls help

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      Hi, could be that or fuel related. Is it a timing belt model ?

  • @angusjames639
    @angusjames639 6 หลายเดือนก่อน

    My 2005 is just sporadic, with it plugged in it starts then dies, so I unplug it and it starts but runs really bad then I plugged it back in and it runs ok, but I can unplug it again and it revs up and runs. It's all over the place

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน +1

      Check for vacuum leaks

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      Also please consider subscribing to my TH-cam Channel for free if you haven't already to show your support for the work I do.

  • @louisnorman2781
    @louisnorman2781 6 หลายเดือนก่อน

    Hey i got my alternator replaced, and right after they replaced. My engine was on and it take forver to get to 40mph and it kick back hard and my safety features come on. 2020 nissian versa s

    • @DocMackGarage
      @DocMackGarage  5 หลายเดือนก่อน

      When they replaced the alternator, did they disconnect the battery ? If so do you know if the vehicle was started up and left running fot 10 mins in a open area ? Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @itsjustaname7721
    @itsjustaname7721 10 หลายเดือนก่อน +2

    Question:
    I have a Chevy Spark 2017
    Check engine light came had codes ran, had 02 sensors replaced but not MAF sensor.
    Check engine light is off, no codes to read but still idles rough and noticable drop in gas mileage.
    What should I look for next the MAF sensor ??

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน

      I would suggest to look at the condition of spark Plugs and coils first before throwing parts at the car.

  • @LoveLiveLifeistooshort
    @LoveLiveLifeistooshort 6 หลายเดือนก่อน +1

    I installed a new one form the dealer and the code p0102 is not going away not even with a good sensor, 2011 camry

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      Check for vacuum leaks or do a smoke test. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @kodiv8226
    @kodiv8226 4 หลายเดือนก่อน +1

    Thanks for this video

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      You are welcome, please consider subscribing to my TH-cam Channel for free if you haven't already to show your support .

  • @ackinito
    @ackinito 10 หลายเดือนก่อน

    Wouldn't a bad AFM cause a limp mode from the PCM?

    • @DocMackGarage
      @DocMackGarage  10 หลายเดือนก่อน

      Hello. Yes it can .

  • @kickrocksbit187
    @kickrocksbit187 ปีที่แล้ว +1

    What if the engine doesn't crank with it plugged in?

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      When you turn the key what happens ?

    • @dabsfordayz2150
      @dabsfordayz2150 11 หลายเดือนก่อน

      @@DocMackGaragemines doing this aswell just flashing my lights 4times 4. Pops on then dies and i needa jump it its so FUCKING ANOYYING

  • @HybridOfficial00
    @HybridOfficial00 2 หลายเดือนก่อน

    This how you test a map sensor too?

    • @DocMackGarage
      @DocMackGarage  2 หลายเดือนก่อน

      @HybridOfficial00 If MAP fails you won't run on the programmed defaults

  • @26bleeek
    @26bleeek ปีที่แล้ว

    This dont work on newer cars. I have a 2012 vw cc and i unplugged it and car still ran good. Drove it for 5min car still didnt cut off.

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      What engine Cubic Capacity is this ?

  • @flightofthefatman
    @flightofthefatman 5 หลายเดือนก่อน

    Doing this with a good MAF sensor sent my Mitsubishi ASX into limp mode.

    • @DocMackGarage
      @DocMackGarage  5 หลายเดือนก่อน

      This will do it because your vehicle has parameters etc, if you disconnect the battery for 15 mins and reconnect it , it will recover. Needs to be on idle for 10 mins in an open area before driving

  • @Tarzan510
    @Tarzan510 5 หลายเดือนก่อน

    2000 mustang gt lean code for bank 1 sensor 1 replaced but still have the code I tried the maf test and it stayed on for 5-10 seconds then died out once unplugged when I started the car with it unplugged it would start up but die out unless I gave it gas

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน +1

      Hi ,3.8L or 4.6L ? Did you check O2 sensors ? Does yours have a MAP ?

    • @Tarzan510
      @Tarzan510 4 หลายเดือนก่อน +1

      @@DocMackGarage my engine is a 4.6 I replaced 1 upstream sensor so far but I accidentally did it for bank 2 sensor 1 and my code is bank 1 sensor 1 so I went and bought another 02 sensor going too replace after lunch and hopefully it’s solves my headache

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน +1

      @Tarzan510 Hopefully, if you haven't already, please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @mrcupcakeman32
    @mrcupcakeman32 3 หลายเดือนก่อน

    i did this for my dads 2011 frontier and it stayed on after i put a new one on

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน +1

      @mrcupcakeman32 You might have a MAP sensor hence it would run on the engine map in the event of MAF being faulty. What engine model and what error codes do you get? Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

    • @mrcupcakeman32
      @mrcupcakeman32 3 หลายเดือนก่อน +1

      @DocMackGarage thanks for the reply....it's a 2011 nissan frontier sv....it has many codes main one was P0101,P0448,P0130. also just subscribed!

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน +1

      @mrcupcakeman32 Thank you for Subscribing, I would say to check for power supply to the MAF. It would be an EVAP issue too. Take a look at this video th-cam.com/video/oASbWC2loh4/w-d-xo.html

    • @mrcupcakeman32
      @mrcupcakeman32 3 หลายเดือนก่อน +1

      @@DocMackGarage I will thanks

  • @alinoory6469
    @alinoory6469 8 หลายเดือนก่อน

    My toyota yaris when shift from first gear to second when accelerate it feels like someone hits you behind ,in third to forth the same , i wished it was maf sensor , it is 2009 sedan model

    • @DocMackGarage
      @DocMackGarage  8 หลายเดือนก่อน

      Manual or tiptronic ?

    • @alinoory6469
      @alinoory6469 8 หลายเดือนก่อน

      @@DocMackGarage automatic sir

  • @alinoory6469
    @alinoory6469 8 หลายเดือนก่อน +1

    sir how to turn off the check engine now,after this 😅.

    • @BlackWhite-ru8gm
      @BlackWhite-ru8gm 8 หลายเดือนก่อน

      Just disconnect your negative battery cable for about 10 minutes then connect it back.

  • @ATaMahmodi-t8d
    @ATaMahmodi-t8d 3 หลายเดือนก่อน +1

    very good

    • @DocMackGarage
      @DocMackGarage  3 หลายเดือนก่อน

      @user-uf9ex9yj4z Thank you. Please consider subscribing to my TH-cam Channel for free if you haven't already to show your support.

  • @zimzyfn91
    @zimzyfn91 ปีที่แล้ว +4

    Put it a brand new mass air flow sensor in and unplugged it while running and it stayed running

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      Do you get any codes?

    • @jeremyrainwater2175
      @jeremyrainwater2175 ปีที่แล้ว

      This is crazy and untrue. Fords stay cranked. If you think it's a bad mass air flow sensor aka maf map mass. Or whatever you wanna call it, just remove the old one and put on a new one. Remove battery terminals for 5 to 10 mins so it will reset. Then put cables back on and crank it up and let it idle for about 10 mins. On other videos it says do this. But I don't think it's that important and is necessary. If so please explain. And tell me if it's too late for me to unplug the terminals and than after 15 mins replace them. Will my new sensor still be good? Since I didn't take the cables off and than put them back on so it could reset the sensor? It's for a Ford Ranger 2006 year , 3.0. ? Anyone? Will my close to new sensor still work properly or have I damaged it since I did not take off the terminals when I replaced my sensor! It's only been two days. August 16th 2023. Let me know anyone what you guys think!

    • @jeremyrainwater2175
      @jeremyrainwater2175 ปีที่แล้ว

      ​@@DocMackGarageyes. You get codes of a vaccume leak or sensor needs replacing and follow the instructions on what to do on your particular vehicle

    • @UIC-Fitness92
      @UIC-Fitness92 ปีที่แล้ว +1

      I was told that I needed to disconnect my battery for a few minutes and reconnect it to reset the computer it worked for the new throttle body I just installed code went away after

  • @HengNarath
    @HengNarath 6 หลายเดือนก่อน

    Did that but after new restart I got engine light

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      When you plugged it back, did the light go off after driving ? If you feel it is not safe to drive, did you get it scanned ?

    • @HengNarath
      @HengNarath 6 หลายเดือนก่อน

      @@DocMackGarage
      After I plug it back and start the engine, I got TrackOff and VSC and Check engine light.
      Get my car scan and they said it's about MAF air flow. They just clear the check light.

  • @jorgealvarez1690
    @jorgealvarez1690 15 วันที่ผ่านมา +1

    Why not try to clean it first

    • @DocMackGarage
      @DocMackGarage  15 วันที่ผ่านมา

      @jorgealvarez1690 That is a good question, it is most likely electrical component that is bad, but yes best to try to clean it. I have a specific video for that. Would you like the link ?

  • @yhmmmm9766
    @yhmmmm9766 4 หลายเดือนก่อน

    I don’t think this is done correctly. It’s not unplugging it from the connector. It’s unplugging it from the air intake pipe with the connector still plugged into the sensor. If the engine stalls the sensor is working cos it is detecting no air flow. What you are doing is you disconnect it from the power and feedback to the ecu, how could the sensor possibly work? Duh.

    • @DocMackGarage
      @DocMackGarage  4 หลายเดือนก่อน

      What I am trying to do is to establish if the MAF was working to start off with. If you unplug it then you can check if the engine stops, if it does then the sensor was having communication and normal resistance to start off with. It isn't a solution, it is a basic test for those who don't have a scan tool. I know the MAP can play a part in the result

  • @jamalthigpen8129
    @jamalthigpen8129 25 วันที่ผ่านมา

    Mines was unplug and it didnt want to start

  • @atomicshift3642
    @atomicshift3642 หลายเดือนก่อน

    The engine turned off because you introduced an open in the circuit. It would do that with any sensor.

    • @DocMackGarage
      @DocMackGarage  หลายเดือนก่อน

      @@atomicshift3642 This is because the car does not have a MAP.

  • @fireheart1007
    @fireheart1007 ปีที่แล้ว

    My MAF is fine, but I think my MAP is the issue. I own a 2008 Xlt triton f-50, where tf is my map at I can’t find it, or am I blind?

    • @rango8137
      @rango8137 ปีที่แล้ว

      You’ll only have one or the other, if that helps

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      Potentially near the intake manifold or you might only have a MAF

    • @fredautos
      @fredautos ปีที่แล้ว

      Hey don't run into changing parts without 100% been sure of what a particular problem is!

  • @josiahlomas2111
    @josiahlomas2111 ปีที่แล้ว

    Make a video on how to splice a new pigtail connector

  • @terrellwilliams8714
    @terrellwilliams8714 ปีที่แล้ว +1

    I be goin 85 on interstate but be gettin a misfire u think it could be the maf

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว +1

      I would say best to start off with checking ignition coils , injectors and Plugs if you are getting it at that speed. Get it scanned if you get P0301 to P030* based on Cylinders then it's Plugs, coils or injectors . Please Subscribe to my TH-cam Channel for free if you haven't already.

    • @terrellwilliams8714
      @terrellwilliams8714 ปีที่แล้ว

      @@DocMackGarage changed that already

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      @@terrellwilliams8714 Do you get any misfires at idle , 0mph ? What vehicle?

    • @terrellwilliams8714
      @terrellwilliams8714 ปีที่แล้ว

      @@DocMackGarage nope 2014 toyota camry

  • @makotohigashi9311
    @makotohigashi9311 ปีที่แล้ว

    It depends on the vehicle though

  • @narsimhachary6417
    @narsimhachary6417 ปีที่แล้ว

    I have removed my engine stop but my acceleration is very low

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      What make , model and year please.

  • @snatchwars
    @snatchwars หลายเดือนก่อน

    Just be aware, many engines will keep running when you unplug the maf so this method isnt that reliable...

    • @DocMackGarage
      @DocMackGarage  หลายเดือนก่อน

      It will keep running if you have a MAP then it will run on a base.

    • @snatchwars
      @snatchwars หลายเดือนก่อน

      @@DocMackGarage what do you mean?

  • @isaacchingubo3033
    @isaacchingubo3033 8 หลายเดือนก่อน

    Engine check came when i was reversing

  • @moustaphacheva3757
    @moustaphacheva3757 5 หลายเดือนก่อน +1

    😊😊😊 nice 😊😊

    • @DocMackGarage
      @DocMackGarage  5 หลายเดือนก่อน

      Thank you please consider subscribing to my TH-cam Channel for free if you haven't already to show your support

  • @korey420
    @korey420 6 หลายเดือนก่อน

    That's not good information for newer cars.. when the maf is unplugged, the cars runs on a "base map" and runs rich..

    • @DocMackGarage
      @DocMackGarage  6 หลายเดือนก่อน

      This was intended for troubleshooting to find the issue , not as a fix.

  • @agee7777
    @agee7777 13 วันที่ผ่านมา

    When i unplugged mine it reved higher

    • @DocMackGarage
      @DocMackGarage  13 วันที่ผ่านมา

      @@agee7777 What kind of car ?

    • @agee7777
      @agee7777 13 วันที่ผ่านมา

      @@DocMackGarage vauxhall astra H 1.7 cdti. It keeps hesitating and going it to limp mode. Then it will go back to working fine. Service light is on the dash.

    • @DocMackGarage
      @DocMackGarage  11 วันที่ผ่านมา

      @@agee7777 I would say get the car scanned. Does it have a DPF ?

    • @agee7777
      @agee7777 11 วันที่ผ่านมา +1

      @@DocMackGarage I think it's the maf sensor. I'm going to replace it and see what happens

    • @DocMackGarage
      @DocMackGarage  11 วันที่ผ่านมา

      @agee7777 Sounds good also check MAP sensor

  • @KevinG1994
    @KevinG1994 9 หลายเดือนก่อน

    Doesn’t work with all vehicle. I have a 2000 Nissan pathfinder.

    • @DocMackGarage
      @DocMackGarage  9 หลายเดือนก่อน

      Yours could be a dual intake?

    • @KevinG1994
      @KevinG1994 9 หลายเดือนก่อน

      @@DocMackGarage Nope. It doesn’t. Also, I cleaned out the throttle chamber and then started to have this surge idle. Thought the MAF sensor but damage. Changed that but same problem.

  • @blindbuys7369
    @blindbuys7369 ปีที่แล้ว

    I start the engine it runs for a ab 39secs then it shuts off. Is that a symptom?

    • @DocMackGarage
      @DocMackGarage  ปีที่แล้ว

      If you try to immediately start the Car again, does it start ? Also please consider subscribing to my TH-cam Channel

    • @UIC-Fitness92
      @UIC-Fitness92 ปีที่แล้ว

      Could be running lean and that’s why it stalls could be many things but its usually the throttle body or bad Mass airflow sensor, have auto one check it with the code reader

  • @nikrai952
    @nikrai952 2 หลายเดือนก่อน

    I replaced the new mass air flow sensor but didn't work. I reset by disconnecting the battery but that also didn't work. Any idea??

    • @DocMackGarage
      @DocMackGarage  2 หลายเดือนก่อน

      What kind of vehicle and mileage ? Cheers

    • @nikrai952
      @nikrai952 2 หลายเดือนก่อน

      Honda civic I-DTEC ES
      Years of manufacture-2013
      Mileage-160000
      Thank you